It isn't a conjecture. I have gotten glitened from having some distilled white vinegar as a test. When I talked to some of my scientists friends, they confirmed that for a mall percentage of people, distilled white vinegar is a problem. The cross contamination isn't from wheat glue in a cask. While yhe gluten protein is too large to pass through the distillation...

Many people will tell you that distilled vinegar is gluten free. The reason this is believed is because the gluten protein molecule is too big to pass through the distillation process. Unfortunately, the liquid ie vinegar is cross contaminated because the gluten protein had been in the liquid prior to distillation process. Most people don't react to distilled...

It's possible, as there are other things that may cause elevated tTg-IgA levels, but in general a reaction to gluten is the culprit: Also, approximately 10x more people have non-celiac gluten sensitivity than have celiac disease, but there isn’t yet a test for NCGS. If your symptoms go away on a gluten-free diet it would likely signal NCGS. ...

Perhaps you could bring you own? Not sure, but worth a try.

I received my ANA test results - negative. I'm thinking it was infection, was put on antibiotics for suspected sibo at the time blood test was taken. Significant improvements from taking them even while eating gluten.